PREDICTION THERMO-PHYSICAL CHARACTERISTICS HEAT-RESISTANT NICKEL ALLOYS DIRECTIONAL CRYSTALLIZATION

被引：10

作者：

Glotka, Alexander Anatolyevich ^{[1
]}

Ol'shanetskii, Vadim Efimovich ^{[1
]}

机构：

[1] Zaporizhzhia Polytech Natl Univ, St Zhukovskogo 64, UA-69063 Zaporizhzhia, Ukraine

来源：

ACTA METALLURGICA SLOVACA | 2021年 / 27卷 / 02期

关键词：

casting heat-resistant nickel alloys directional solidification; thermodynamic processes phase separation; critical temperatures; SUPERALLOY; MICROSTRUCTURE; DENSITIES; CORROSION; MAR-M247; BEHAVIOR;

D O I：

10.36547/ams.27.2.813

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The paper presents a comparative analysis of the practical and calculated values of the thermophysical properties of heat-resistant nickel alloys of directional solidification. Using an empirical approach, new ratios of the elements K gamma'. and K gamma have been obtained for the first time, which take into account the combined effect of alloying elements on the temperature of multicomponent compositions of cast heat-resistant alloys. The calculated values of the critical temperatures for the Ni-6Al-9Co-8W-4Re-4Ta-1.5Nb-1Mo-0.15C system are in good agreement with the experimental ones. The dependence of the K gamma ratio on the alloying system; the influence of alloying on the liquidus temperature of the alloys is studied. The ratios of the content of alloying elements and regression models that can be used to predict the width of the crystallization temperature range and the optimal homogenization temperature for a particular alloy are presented.

引用

页码：68 / 71

页数：4

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